属于社区和群体水平行为改变理论的是（）

A.健康信念模式

B.创新扩散理论

C.阶段改变理论

D.理性行为理论

E.计划行为理论

He had to pause from time to time to wipe the sweat from his forehead, because the

air-conditioning system ____.[ ]

A. broke in

B. broke up

C. broke out

D. broke down